Question

4x-5,5 *(x+2,5)=3+9,5​

Answer 1

Объяснение:

4x-5.5x-13.75=12.5

-1.5x=26.25

x=-17.5

Answer 2

Ответ:

-17,5

Объяснение:

4x-5,5x-13,75=3+9,5

4x-5,5x=12,5+13,75

-1,5x=26,25

X=-17,5

Answer 3

To solve the equation, we can follow these steps:

1. Distribute the left-hand side of the equation by multiplying 4x-5,5 with x+2,5:

   4x(x+2,5) - 5,5(x+2,5) = 3 + 9,5

2. Simplify by multiplying out the brackets:

   4x^2 + 10x - 5,5x - 13,75 = 12,5

3. Combine like terms:

   4x^2 + 4,5x - 26,25 = 0

4. Divide both sides by 4 to simplify:

   x^2 + (9/8)x - (26,25/4) = 0

5. Use the quadratic formula to solve for x:

   x = (-b ± √(b^2 - 4ac)) / 2a

   where a = 1, b = 9/8, and c = -26,25/4

   x = (-9/8 ± √(9/8)^2 + 4(26,25/4)) / 2(1)

   x = (-9/8 ± √(9/64 + 105/16)) / 2

   x = (-9/8 ± √(9/64 + 840/64)) / 2

   x = (-9/8 ± √849/64) / 2

   x = (-9/8 ± 29/8sqrt(3)) / 2

   x = -9/16 ± 29/16sqrt(3)

So the solutions are:

scssCopy code
x = -9/16 + 29/16sqrt(3)

x = -9/16 - 29/16sqrt(3)